import java.util.Scanner;public class Main{public static void main(String [] args){Scanner canner=new Scanner(System.in);while(canner.hasNextLine()){String str=new StringBuffer(canner.nextLine()).toString();int result= str.substring(str.lastIndexOf(" ")+1,str.length()).length();System.out.println(result);}}}  我已经通过这道算法题！ https://www.nowcoder.com/questionTerminal/8c949ea5f36f422594b306a2300315da